This is something new..to me anyways.. One Cancels All order..hmm.. <A HREF="http://www.interactivebrokers.com/html/webhelp/Making_Trades/Create_Order_Types/oca.htm" target="_new">http://www.interactivebrokers.com/html/webhelp/Making_Trades/Create_Order_Types/oca.htm</A>